Adding margins

The margin property sets margins (extra space) around an element.

/* no margins, no units  when 0 */
margin: 0; 

/* horizontal and vertical margins */
margin: 10px 1.5rem;

/* top, right,  bottom,  left margins 
(clockwise ) */
margin: 10px 1.5rem 10px 1.5rem;

/* top, horizontal, bottom margins */
margin: 1em auto 1em; 

detailed properties

/* margins for every side */
margin-top: 1px;
margin-right: 1px;
margin-bottom: 1px;
margin-left: 1px;